chapter 15: the special senses Flashcards
Identify the muscle that is controlled by the abducens nerve (CN VI).
B
Identify the muscle responsible for depressing the eye and turning it laterally.
A
Identify the muscle at D
inferior rectus
Which layer of the eye is indicated by letter A?
fibrous
Identify the choroid.
B
The palpebrae: ______________
protect the eye
conjunctiva: _________________
protect eye from drying out
lacrimal glands:__________________
destroy bacteria
Which structure contains the blood vessels that nourish all layers of the eye?
the choroid
What structure in the eye creates a visual blind spot?
optic disc
You want to look up and to your right. Which extrinsic eye muscles would be the most active in each eye?
right eye: inferior oblique left eye: superior rectus
What is the portion of the eye that allows light to pass into the posterior chamber?
pupil
What term refers to the eyes moving medially to track items close at hand?
convergence
During close vision, what actions must the eye take to bring an object into focus?
contract the ciliary body
Which photoreceptor cells respond to very dim light?
rods
Which region of the ear houses perilymph and endolymph?
C
Which letter indicates structures involved in detection of BOTH hearing and equilibrium?
C
A middle ear infection (otitis media) would be located in which region?
B
Damage to which of these structures can result in sensorineural deafness?
D
What are the names of the bones at A, in order from left to right?
malleus, incus, stapes
What part of the inner ear houses the receptor organ of hearing, the spiral organ (organ of Corti)?
D
Which part of the inner ear houses receptors most responsive to rotational (angular) movements of the head?
A
